CN101267222A - Device for controlling multi-channel sound signal volume adjustment in mobile device sound mixing device - Google Patents

Device for controlling multi-channel sound signal volume adjustment in mobile device sound mixing device Download PDF

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CN101267222A
CN101267222A CNA2007100380301A CN200710038030A CN101267222A CN 101267222 A CN101267222 A CN 101267222A CN A2007100380301 A CNA2007100380301 A CN A2007100380301A CN 200710038030 A CN200710038030 A CN 200710038030A CN 101267222 A CN101267222 A CN 101267222A
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volume
voice signal
road
coefficient
adjusted
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杨松岸
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ZHIDUO MICRO ELECTRON (SHANGHAI) CO Ltd
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ZHIDUO MICRO ELECTRON (SHANGHAI) CO Ltd
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Abstract

The present invention provides a method for regulating the sound volume to a plurality of audio signals in the sound mixing process of an audio mixing device of a mobile apparatus. The sound volume regulating coefficients of J audio signals in L audio signals are respectively controlled to lead to that the sound volume of the audio mixing signal obtained after the final regulation to L audio signals. The method obtains the sound volume of L audio signals according to the predetermined condition and determines whether the sound volume of the audio mixing signal exceeds the predetermined threshold value. If the sound volume of the audio mixing signal exceeds the predetermined threshold value, the sound volume regulating coefficients of J audio signals in L audio signals are respectively regulated according to the predetermined regulation to lead to that the sound volume of the audio mixing signal not exceed the predetermined threshold value. The invention also provides a control device which regulates the sound volume of a plurality of audio signals in the sound mixing process of an audio mixing device of a mobile apparatus. Through the invention, the sound volume of a random audio signal or a plurality of random audio signals can be regulated according to the requirement of the user thereby realizing better effect (such as Karaoke).

Description

The device that the control multi-channel sound signal volume is adjusted in the mobile device device sound mixing
Technical field
The present invention relates to mobile device, for example the device sound mixing in mobile phone, the especially mobile device carries out control method and the control corresponding device that volume is adjusted to multi-channel sound signal in the audio mixing process.
Background technology
At present, mobile device with music playback function, for example mobile phone, PDA(Personal Digital Assistant), portable media player (PMP), multimedia video central platform (PMC) product, MP4 player, palmtop PC etc. are more and more universal, and because some is liked playing Karaoka or pursues modish user's demand, the mobile device with Kara OK function also is widely used gradually.On the one hand, own competitiveness of product improves by the mobile device with Kara OK function is provided in numerous businessmans, and on the other hand, the user has also satisfied the needs of own performance Karaoke to a certain extent.
Although released the mobile device that possesses Kara OK function of many styles on the market, be not that each mobile device has all been realized Kara OK function veritably.For example, from the simplest angle, Kara OK function should be able to carry out audio mixing to be handled, but the song (voice) that the user sings does not often enter in these mobile devices and plays behind the accompaniment music audio mixing, but accompaniment music is play by mobile device, the direct performance of user (passing through mobile device), this and our common described Kara OK function still have gap.Such product has a lot, the CS6 product of Xiaxin company for example, and this product has the function and the Kara OK functions such as the tinkle of bells of MMS multimedia message, 40 chords; Again for example, the carry-on sing karaoke mobile phone M60 and the Z2100 of company of Haier product; Again for example, the CDMA mobile phone of the V730 model of Motorola Inc. has 16 chord rings, have color/graphics, the user can download Kara OK songs and play at mobile phone from the website of Motorola, mobile phone screen can be got captions with music, and the user can be with singing etc.
At application number is the device that has clearly proposed to realize sound mixing function in the Chinese patent application (a kind of method and related device that sound mixing function is provided for mobile device) of " 200610117217.6 " in mobile device, thereby on the aspect of audio mixing, really realized realizing the mobile device Kara OK function, but do not solve the problem that volume is regulated in this patent application well, and this problem can influence the effect of Karaoke.For example, under a lot of situations, the user wishes original singer's volume is reduced, heighten the song (perhaps singer's volume) of user's performance and the volume of accompaniment tone simultaneously, but when heightening the volume of certain road voice signal, may cause total volume to surpass the high threshold of device sound mixing in the mobile device, this can cause audio distortions, thus the effect that influence is sung.
At present, also do not have to solve the method for in the device sound mixing of mobile device, the volume of one or more voice signal being regulated, be necessary to propose technical scheme and solve similar problem.
Summary of the invention
At above-mentioned defective, the present invention proposes a kind of device sound mixing in mobile device and in the audio mixing process multi-channel sound signal is carried out control method and the corresponding device thereof that volume is adjusted.
According to an aspect of the present invention, provide a kind of and in the device sound mixing of mobile device, in the control audio mixing process L road voice signal is carried out the method that volume is adjusted, wherein, the volume of the audio signal that obtains is no more than predetermined threshold so that finally adjust afterwards to described L road voice signal to adjust the volume adjustment coefficient of the J road voice signal in the voice signal of described L road, wherein, 1≤J≤L, L＞1.
According to another aspect of the present invention, provide in a kind of device sound mixing of mobile device and in the control audio mixing process L road voice signal is carried out the control device that volume is adjusted, wherein, the volume of the audio signal that obtains is no more than predetermined threshold so that finally adjust afterwards to described L road voice signal to adjust the volume adjustment coefficient of the J road voice signal in the voice signal of described L road, wherein, 1≤J≤L, L＞1.
Preferably, described control device comprises: deriving means is used for obtaining according to predetermined condition the volume of the audio signal of described L road voice signal; The volume judgment means is used to judge whether the volume of described audio signal surpasses predetermined threshold; And, first coefficient regulator, the volume that is used for when the volume of described audio signal surpasses predetermined threshold adjusting according to pre-defined rule the J road voice signal of L road voice signal is adjusted coefficient so that described audio signal volume is no more than predetermined threshold.
The present invention can adjust one or more sound signal volume in the audio mixing process of the device sound mixing of mobile device flexibly, thereby can need adjust arbitrary road or appoint the volume of multi-channel sound signal according to the user.And when the present invention is applied to Kara OK function, can turn down original singer's volume, make original singer's volume disappear or play (to play suggesting effect), thereby can give prominence to singer's sound, to realize better playing Karaoka effect the singer with very little sound.The present invention realizes conveniently can being widely used in the various mobile devices.
Description of drawings
By reading the detailed description of doing with reference to the following drawings that non-limiting example is done, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 has described the flow chart that in the control audio mixing process multi-channel sound signal is carried out the method for volume adjustment in the device sound mixing of mobile device according to the first embodiment of the present invention;
Fig. 2 has described the flow chart that in the control audio mixing process multi-channel sound signal is carried out the method for volume adjustment in the device sound mixing of mobile device according to a second embodiment of the present invention;
Fig. 3 has described the flow chart that in the control audio mixing process multi-channel sound signal is carried out the method for volume adjustment in the device sound mixing of mobile device of a third embodiment in accordance with the invention;
Fig. 4 has described in the device sound mixing of mobile device according to an embodiment of the invention in the audio mixing process structure chart that multi-channel sound signal is carried out the control device that volume adjusts;
Fig. 5 has described according to the structure chart that multi-channel sound signal is carried out the control device of volume adjustment in the device sound mixing of the mobile device of the first embodiment of the present invention in the audio mixing process;
Fig. 6 has described according to the structure chart that multi-channel sound signal is carried out first coefficient regulator in the control device that volume adjusts in the device sound mixing of the mobile device of the first embodiment of the present invention in the audio mixing process;
Fig. 7 has described in the device sound mixing of mobile device of a third embodiment in accordance with the invention in the audio mixing process structure chart that multi-channel sound signal is carried out the control device that volume adjusts;
Fig. 8 has described the schematic diagram that multi-channel sound signal is carried out the user interface of volume adjustment according to the first embodiment of the present invention in mobile device;
Fig. 9 has described the building-block of logic of assemblies such as simulation device sound mixing in control device according to an embodiment of the invention and the mobile device, power adjustment apparatus;
Figure 10 has described the building-block of logic of assemblies such as simulation device sound mixing in control device according to an embodiment of the invention and the mobile device, power adjustment apparatus; And
Figure 11 has described the building-block of logic of assemblies such as simulation device sound mixing in control device according to an embodiment of the invention and the mobile device, power adjustment apparatus.
Embodiment
With reference to figure 1, it has described the flow chart that in the control audio mixing process multi-channel sound signal is carried out the method for volume adjustment in the device sound mixing of mobile device according to the first embodiment of the present invention.Execution in step S120 at first receives the adjustment instruction of adjusting coefficient from the volume of user's adjustment K road voice signal, is appreciated that the user at first will (for example by user interface shown in Figure 4) send instruction under these circumstances.Enter step S121 then, do you judge the indication that comprises the volume adjustment coefficient that increases arbitrary road voice signal in the described adjustment instruction? be appreciated that, each road voice signal of indication all reduces volume and adjusts coefficient in described instruction, is no more than in the audio signal of current L road voice signal that the volume according to the adjusted audio signal of instruction can not surpass this predetermined threshold yet under the situation of predetermined threshold.Therefore, as the judged result of step S121 execution in step S122 when negating, described result enters step S123 when being sure, promptly adjust the volume of the audio signal of the described L of coefficient calculations road voice signal at least according to the volume on each road in the voice signal of described L road, its objective is whether the volume of obtaining the audio signal after being adjusted surpasses predetermined threshold so that judge the volume of audio signal, the volume of wherein said controlled K road voice signal is adjusted the coefficient that coefficient should not re-use current (before adjusting), calculates and should adjust coefficient according to the volume of the indicated K road voice signal of instruction.Then, execution in step S124 judges promptly whether the volume of described audio signal surpasses predetermined threshold again, and in the present embodiment, described device sound mixing is digital device sound mixing, therefore judges whether set up as lower inequality:
Σ n = 1 L ( k n × 2 dn ) ≤ 2 m
Wherein, k nThe volume adjustment coefficient of representing n road voice signal, d nThe figure place of the decoding device of expression output n road voice signal, m represents to export the figure place of D/A conversion device of the audio signal of described L road voice signal, and n is an integer, and 1≤n≤L.Be appreciated that described inequality part before is the result of calculation of above-mentioned steps S123.
If described inequality is set up, then show according to the volume of adjusting the adjusted audio signal of instruction and be no more than predetermined threshold, therefore direct execution in step S122 adjusts the volume of the indicated K road voice signal of this instruction and adjusts coefficient according to described instruction, this processing procedure of adjusting volume finishes; Otherwise showing will be above predetermined threshold according to the volume of adjusting the adjusted audio signal of instruction, so execution in step S125, judge whether to keep the volume adjustment coefficient of L-K road voice signal constant? if the judged result of described step S125 is sure, execution in step S126 then, it is constant promptly to keep the volume of L-K road voice signal to adjust coefficient, and with same ratio according to the indicated raising of described adjustment instruction or reduce that volume adjusts that the amplitude of coefficient adjusts that the volume of described K road voice signal is adjusted coefficient so that the volume that described L road voice signal is carried out final adjusted audio signal is no more than described predetermined threshold; If the judged result of described step S125 is for negating, show that then need adjust coefficient to the volume of L-K road voice signal also adjusts, enter step S127 this moment, whether the volume of described audio signal surpassed predetermined threshold when the volume of judging described L-K road voice signal was again adjusted coefficient and is zero, no matter how the volume adjustment coefficient of described L-K road voice signal is adjusted if the result of described step S127 is sure then showing, all can't adjust according to described instruction fully, carry out compromise adjustment (promptly not exclusively adjusting) operation this moment according to described adjustment instruction, execution in step S128 in the present embodiment, one or more the volume that reduces in the voice signal of described L-K road is adjusted coefficient, correspondingly the volume of one or more in the voice signal that volume adjustment coefficient in the voice signal of described K road is increased is adjusted coefficient and is adjusted to greatest coefficient respectively, this greatest coefficient makes the volume of described audio signal be no more than predetermined threshold, enter step S 129 then, volume in the voice signal of K road is adjusted in the voice signal that coefficient is lowered one or more volume adjust coefficient and be adjusted to the volume that is lower than this instruction indication respectively and adjust coefficient, this adjusts processing procedure end of volume.If the result of described step S127 negates, then show under the prerequisite of the volume adjustment coefficient of adjusting described L-K road voice signal and can adjust described K road voice signal according to described instruction, carry out fully this moment and adjust (promptly according to instruction K road voice signal being adjusted fully) operation, execution in step S130 in the present embodiment, adjust coefficient so that the volume of the audio signal of described L road voice signal is no more than described predetermined threshold behind the execution in step S131 with one or more the volume that ratio at random reduces in the voice signal of L-K road, enter step S131 then, adjust coefficient according to the volume that described K road voice signal is adjusted in described adjustment instruction, this processing procedure of adjusting volume finishes.
With reference to figure 1, it will be appreciated by those skilled in the art that above-mentioned steps S128, S129 are an embodiment of described compromise adjustment operation, this embodiment can suitably change.For example the order of step S128, S129 can exchange, and be appreciated that, owing in step S128, do not indicate the volume that improves controlled voice signal to adjust coefficient according to described instruction fully, therefore, the volume of the controlled voice signal of reduction of in step S129 described instruction being indicated is adjusted coefficient adjustment to the volume that is lower than described instruction indication and is adjusted coefficient so that be more prone to satisfy the condition that is no more than predetermined threshold by final adjusted audio signal.It will be appreciated by those skilled in the art that in step S129, indicated the volume of controlled voice signal when described instruction and adjusted coefficient adjustment, then carry out this instruction and get final product to zero; And change in the example at another, also can reduce the volume adjustment coefficient of controlled voice signal fully according to described instruction; Change in the example at another, the volume of the controlled voice signal of reduction that described instruction can also be indicated is adjusted coefficient adjustment to the volume that is higher than described instruction indication and is adjusted coefficient.Similarly, those skilled in the art understand, in step S128, can adjust one or more volume in the voice signal that coefficient is increased to volume in the voice signal of described K road according to same ratio and adjust coefficient and be adjusted to greatest coefficient respectively, also can be adjusted to greatest coefficient respectively according to different proportion (for example randomly or to appointment or predetermined voice signal according to a special ratio); On the other hand, the volume on one or more or all roads in the voice signal of described L-K road can be adjusted coefficient and be reduced to zero, not repeat them here.
With reference to figure 1, it will be appreciated by those skilled in the art that above-mentioned steps S130, S131 are a described embodiment who adjusts operation fully again, this embodiment also can suitably change.For example, change in the example at one, one or more the volume that can reduce in described step S130 in the voice signal of L-K road is adjusted coefficient, thus certainly before the volume that reduces these voice signals is adjusted coefficient according to described command calculations the minimum radius that should reduce can guarantee and can adjust coefficient according to the volume that described K road voice signal is adjusted in described instruction.Change in the example at one, also can be with described step S130, the order of S131 is exchanged, in such variation example, then the antecedent ground user instruction wishes that to the user volume of one or more voice signal of adjusting adjusts coefficient and adjust, as mentioned above, the volume that increases this road voice signal is in this case often adjusted coefficient, because adjusting coefficient, the volume of all the other road voice signals also do not reduce, so the volume of the audio signal of voice signal surpasses above-mentioned predetermined threshold after may causing adjusting, can cause voice signal distortion or other situations like this, not give unnecessary details at this.
Those skilled in the art also understand, and in described step S128 to S131, except indicated controlled one or more voice signal of user instruction being carried out special processing, the voice signal outside can also be to user instruction indicated carries out special processing.For example change in the example at one, volume to one or more predetermined sound signal is carried out special processing, for example keep the volume adjustment coefficient of this (a bit) road voice signal constant, those skilled in the art understand, such variation example often is applicable to when using Kara OK function constant to accompaniment tone, heightens singer's volume and turns down the situation of original singer's volume.Change in the example at another, volume to controlled one or more voice signal of last time is carried out special processing, for example remain and keep its volume adjustment coefficient constant, in such variation example, for controlled volume of last time may be the consideration of the desired volume that remains unchanged of user, so controlled volume of last time is remained unchanged.
Those skilled in the art also understand, in above-mentioned other variation example embodiment illustrated in fig. 1, can omit step S127, promptly directly carry out one or more among the described step S128,129, perhaps directly carry out one or more among the described step S130,131, perhaps carry out other similar change operation, this does not influence flesh and blood of the present invention, does not repeat them here.
Those skilled in the art also understand, in above-mentioned other variation example embodiment illustrated in fig. 1, can omit step S125, the volume of promptly directly adjusting the K road voice signal of described adjustment instruction indication is adjusted coefficient and the volume of not adjusting described L-K road voice signal is adjusted coefficient (for example step S126), perhaps directly the execution volume of not only the having adjusted described K road voice signal volume adjusting coefficient but also adjust described L-K road voice signal is adjusted the operation of coefficient, be appreciated that, still can omit or execution in step S127 under latter event, this does not influence the present invention.
Again with reference to figure 1, wherein step S126 has described the volume that keeps described L-K road voice signal to adjust coefficient constant, and the volume of adjusting described K road voice signal is adjusted coefficient so that the volume that described L road voice signal is carried out final adjusted audio signal is no more than an embodiment of described predetermined threshold.In the present embodiment, based on the indicated raising of described instruction or reduce the amplitude that volume is adjusted coefficient, and adjust coefficient according to the volume that same ratio is adjusted described K road voice signal, for example change in the example at one, described instruction is adjusted the volume of 4 road voice signals and is adjusted coefficient, and (for example adjust coefficient in max volume is under 100 the situation to the adjusting range that the first via is adjusted voice signal in order to improve 20%, it is 30 that its former volume is adjusted coefficient, it should be adjusted to 36 the instruction indication), the second the tunnel is adjusted the adjusting range of voice signal for improving 30%, Third Road is adjusted the adjusting range of voice signal for improving 40%, the four the tunnel is adjusted the adjusting range of voice signal for reducing by 50%, then according to step S126, according to a same ratio, for example 60% (those skilled in the art's understanding, this ratio can obtain by calculating, for example determine a ratio that makes that audio signal is the most approaching or equal predetermined threshold under the situation that adjusted audio signal is no more than predetermined threshold satisfying) volume of adjusting each controlled voice signal in road adjusts coefficient, and the therefore final first via is adjusted the adjusting range of voice signal for improving 12% (20% * 60%), the second the tunnel is adjusted the adjusting range of voice signal for improving 18%, Third Road is adjusted the adjusting range of voice signal for improving 24%, the four the tunnel is adjusted the adjusting range of voice signal for reducing by 30%.Certainly, those skilled in the art understand, above-mentioned steps S126 also can otherwise realize, for example change in the example at one, each the road voice signal that is enhanced volume adjustment coefficient is adjusted with a same ratio, and each the road voice signal that is lowered volume adjustment coefficient is adjusted with another same ratio, will not give unnecessary details.
With reference to figure 2, it has described the flow chart that in the control audio mixing process multi-channel sound signal is carried out the method for volume adjustment in the device sound mixing of mobile device according to a second embodiment of the present invention.Present embodiment has been made slight variations on the basis of first embodiment shown in Figure 1, promptly be the variation example of step S126.For for simplicity, Fig. 2 only shows changing unit.In a second embodiment, after the volume adjustment coefficient of determining the described L-K of maintenance road voice signal is constant, execution in step S140, the volume of predetermined one road voice signal is adjusted coefficient to be adjusted according to described instruction indication, enter step S141 then, adjust the volume of described K-1 road voice signal according to ratio at random and adjust coefficient to greatest coefficient, this greatest coefficient makes the volume of described audio signal be no more than predetermined threshold.Those skilled in the art understand, change in the example at one, for example use the volume that the determined user of user instruction can be sung sound when mobile device of the present invention is sung Karaoke and adjust coefficient and adjust according to the indication of instruction when the user uses, the voice signal that other each roads are instructed to adjust (for example accompaniment tone) then can only be adjusted under audio signal is no more than the prerequisite of predetermined threshold most possibly.Change in the example at another, then the volume of adjusting road voice signal in the described K road voice signal that is instructed to adjust with any one resize ratio that is higher than all the other K-1 road voice signals is adjusted coefficient, and adjust coefficient with the volume that any lower resize ratio is adjusted described K-1 road voice signal, those skilled in the art understand, all the other K-1 road controlled ratios of voice signal can be the same or different, and for example are to determine at random.
With reference to figure 1, Fig. 2, it will be appreciated by those skilled in the art that, in the instruction of adjustment described in the step S121 indication K road voice signal is adjusted, and at step S122, S126, S129, described among S140 and the S141 volume of K road voice signal has been adjusted the control procedure that coefficient is adjusted, but in the variation example of the foregoing description, described controlled voice signal may be different with the indication of described instruction, for example road voice signal in the voice signal is not adjusted in the K road, this may take place in step S141 at least, and for example the ratio of last road voice signal adjustment is zero.
Again with reference to step S128 among the figure 1 and the step S141 among Fig. 2, wherein, one or more volume in the voice signal of K road is adjusted coefficient be adjusted to greatest coefficient respectively, perhaps the volume of K-1 road voice signal being adjusted the operation that coefficient is adjusted to greatest coefficient respectively can otherwise realize, for example change in the example at one, can these volumes not adjusted coefficient adjustment to greatest coefficient, adjust coefficient and just improve these volumes, make the volume that described L road voice signal is carried out final adjusted audio signal be no more than described predetermined threshold and get final product, will not give unnecessary details.
With reference to figure 3, the flow chart that in the control audio mixing process multi-channel sound signal is carried out the method for volume adjustment in the device sound mixing of mobile device of a third embodiment in accordance with the invention has been described.At first, execution in step S110 adjusts coefficient and this road voice signal calculate the audio signal of described L road voice signal in the max volume of next predetermined time interval volume according to the volume on each road in the voice signal of described L road after at interval at the fixed time at least; Enter step S111 then, judge whether the volume of described audio signal surpasses predetermined threshold; If the volume of audio signal surpasses predetermined threshold, execution in step S113 then, the volume that reduces described J road voice signal is adjusted coefficient so that the volume that described L road voice signal is carried out final adjusted audio signal is no more than described predetermined threshold; If the volume of audio signal is no more than predetermined threshold, execution in step S112 then, the volume that improves described J road voice signal is adjusted coefficient so that the volume that described L road voice signal is carried out final adjusted audio signal equals described predetermined threshold.It will be appreciated by those skilled in the art that described step S112, S113 can be achieved with reference to steps such as above-mentioned S126 shown in Figure 1, S128～S131 and relevant explanation at least, will not give unnecessary details.
With reference to figure 3, those skilled in the art understand, in step S110, described predetermined time interval can be followed successively by the reproduction time length of an object of being handled by described device sound mixing, when the user uses application mobile device of the present invention to sing Karaoke, just can be the time span of a song for example, in such variation example, control device provided by the invention can be controlled the time of next time carrying out described step S110 according to the time span information of this song.Change in the example at another, described predetermined time interval is followed successively by the determined time span of external event, for example when the user uses application mobile device of the present invention to sing Karaoke, it is next by the handled object of device sound mixing that the user uses fast forward button directly to jump to, then user's jump instruction is exactly an external event, the time span of this jump instruction has then correspondingly been determined current (last one) processed object.
It will be appreciated by those skilled in the art that at one to change in the example,, can realize not repeating them here carrying out the process that volume is adjusted in the audio mixing process in real time when enough hour of the described scheduled time.
With reference to figure 3, in step S111, whether set up as lower inequality again by judging:
Σ n = 1 L ( k n × s n ) ≤ R max
The volume of determining described audio signal surpasses predetermined threshold.Wherein, k nThe volume adjustment coefficient of representing n road voice signal, s nThe max volume value of representing n road voice signal, R MaxThe maximum output swing of representing described simulation device sound mixing, n is an integer, and 1≤n≤L.It will be appreciated by those skilled in the art that in the present embodiment described device sound mixing is the simulation device sound mixing.Those skilled in the art also understand, s nAlso can represent the max volume value of n road voice signal in one period scheduled time, the time span of for example above-mentioned (descending) object of being handled by described device sound mixing.Change in the example at one, described step S111 also can adopt the step S124 among Fig. 1 to realize, similarly, is appreciated that at another to change in the example that the step S124 among described Fig. 1 also can adopt above-mentioned steps S111 to realize, does not repeat them here.
With reference to figure 1 and Fig. 3, those skilled in the art understand, step S120 among Fig. 1 is the embodiment of predetermined condition of volume that obtains the audio signal of described L road voice signal, initiate in the multi-channel sound signal one or more carried out the control that volume is adjusted by the user in this embodiment, the volume that control device then provided by the invention is adjusted corresponding road voice signal according to user instruction is adjusted coefficient, for example uses mobile device of the present invention and sings and just can regulate accompaniment tone (one road voice signal) on one's own initiative when playing Karaoka and volume that the user sings sound (another road voice signal) when the user uses; Similarly, the step S110 of Fig. 3 also is an embodiment of above-mentioned predetermined condition, different is, in such embodiments, initiatively detect one or more the volume that whether should regulate in the multi-channel sound signal by control device provided by the invention, the for example same application mobile device of the present invention that uses is sung when playing Karaoka, owing to the volume of the accompaniment tone of each song may there are differences when causing playing a new song accompaniment tone apparently higher than the volume of a last song, can be sung the volume of the audio signal of new song this moment by described control device active adjustment, thereby can reduce the accompaniment tone volume to give more stable accompaniment tone of user.
Again referring to figs. 1 to Fig. 3, those skilled in the art understand, at described three embodiment and change accordingly in the example, described predetermined threshold can be the maximum output swing that described device sound mixing can carry, and also can be a predetermined value that is lower than this maximum output swing.For example change in the example at one, if the maximum output swing that adopts device sound mixing to carry is then excessive by the volume of the audio signal that the user received, therefore preestablishing one makes the pleasant volume value of user as described predetermined threshold, ratio that for example can be by a maximum output swing is set in control device provided by the invention is as this predetermined threshold, thereby can dynamically regulate its desirable threshold value by the user, not repeat them here.
With reference to figure 4, it has described in the device sound mixing of mobile device according to an embodiment of the invention in the audio mixing process structure chart that multi-channel sound signal is carried out the control device that volume adjusts.This control device 2 comprises deriving means 22, volume judgment means 24 and first coefficient regulator 25.Wherein, described deriving means 22 is used for obtaining according to predetermined condition the volume of the audio signal of described L road voice signal; Described volume judgment means 24 is used to judge whether the volume of described audio signal surpasses predetermined threshold; And, described first coefficient regulator 25 is used for when the volume of described audio signal surpasses predetermined threshold, adjust the volume of the J road voice signal in the voice signal of L road according to pre-defined rule and adjust coefficient, be no more than predetermined threshold so that carry out the volume of final adjusted audio signal.Those skilled in the art can be achieved to said apparatus with reference to the embodiment shown in any among above-mentioned Fig. 1 to Fig. 3, do not repeat them here.
With reference to figure 5, it has been described according to the structure chart that multi-channel sound signal is carried out the control device of volume adjustment in the device sound mixing of the mobile device of the first embodiment of the present invention in the audio mixing process.Compare with embodiment illustrated in fig. 4, in the present embodiment, described control device 2 ' increased by second coefficient regulator 26, and described deriving means 22 ' be embodied in first calculation element 222.Wherein, described predetermined condition comprises the adjustment instruction of adjusting coefficient from the volume of user's adjustment K road voice signal, and described first calculation element 222 is used for adjusting according to the volume on each road of voice signal, described L road at least the volume of the audio signal of the described L of coefficient calculations road voice signal, wherein, to adjust coefficient be that the volume of the indicated K road voice signal of described adjustment instruction is adjusted coefficient to the volume of described controlled K road voice signal.Described second coefficient regulator 26 is used for directly adjusting according to described instruction from the user volume adjustment coefficient of described K road voice signal when the volume of described audio signal is no more than predetermined threshold.
One at above-mentioned first embodiment changes in the example, described deriving means 22 ' also comprise first judgment means, 223 (not shown)s, it is used for judging that the volume of described adjustment K road voice signal adjusts the instruction of coefficient and whether comprise that the volume that increases arbitrary road voice signal adjusts the indication of coefficient, in such variation example, when comprising the indication of the volume adjustment coefficient that increases arbitrary road voice signal in the described instruction, move described first calculation element, otherwise can directly move described second coefficient regulator 26.Change in the example at another, described control device 2 ' can not comprise described second coefficient regulator 26, similarly, in the embodiment shown in fig. 4, described control device 2 also can comprise described second coefficient regulator 26, will not give unnecessary details.
Those skilled in the art can with reference to above-mentioned embodiment illustrated in fig. 1 and to the elaboration of associated change example realize above-mentioned Fig. 5 with and change routine shown device, do not repeat them here.
With reference to figure 6, it has been described according to the structure chart that multi-channel sound signal is carried out first coefficient regulator 25 in the control device that volume adjusts in the device sound mixing of the mobile device of the first embodiment of the present invention in the audio mixing process.And described first coefficient regulator 25 comprises second judgment means 253 and compromise adjusting device 254, complete adjusting device 255.Wherein, described second judgment means 253 is used to judge whether the volume of described audio signal when the volume of described L-K road voice signal is adjusted coefficient and is zero surpasses predetermined threshold; Described compromise adjusting device 254 is used for compromising when the volume of described audio signal surpasses predetermined threshold and adjusts so that the volume that described L road voice signal is carried out final adjusted audio signal is no more than described predetermined threshold; Described complete adjusting device 255 is used for adjusting fully when the volume of described audio signal is no more than predetermined threshold so that the volume that described L road voice signal is carried out final adjusted audio signal is no more than described predetermined threshold.
With reference to figure 6, in the present embodiment, described compromise adjusting device 254 comprises the 5th adjusting device 2541 and the 6th adjusting device 2542, wherein, the 5th adjusting device 2541 is used for reducing one or more volume of described L-K road voice signal and adjusts coefficient, correspondingly the volume of one or more in the voice signal that volume adjustment coefficient in the voice signal of described K road is increased is adjusted coefficient and is adjusted to greatest coefficient respectively, and this greatest coefficient makes the volume of described audio signal be no more than predetermined threshold; The volume of one or more in the voice signal that described the 6th adjusting device 2542 is used for described K road voice signal volume adjustment coefficient is lowered is adjusted coefficient and is adjusted to the volume adjustment coefficient that is lower than described instruction indication respectively.And described complete adjusting device 255 comprises the 7th adjusting device 2551, its one or more volume that is used for reducing described L-K road voice signal is adjusted coefficient, so that in the 8th adjusting device 2552 operation backs the volume that described L road voice signal carries out final adjusted audio signal is no more than described predetermined threshold; And, the 8th adjusting device 2552, it is used for adjusting according to described instruction the volume adjustment coefficient of described K road voice signal.Described in the present embodiment the 7th adjusting device and the 8th adjusting device move simultaneously, and change in the example at one, and described the 7th adjusting device and the 8th adjusting device sequentially move.Those skilled in the art can not repeat them here with reference to above-mentioned Fig. 1, embodiment illustrated in fig. 2 and the elaboration of associated change example realized above-mentioned device shown in Figure 6 and the corresponding example that changes.
In another embodiment of the present invention, described first coefficient regulator 25 comprises first adjusting device, 251 (not shown)s, it is constant that it is used to keep the volume of described L-K road voice signal to adjust coefficient, and the volume of adjusting described K road voice signal is adjusted coefficient so that the volume that described L road voice signal is carried out final adjusted audio signal is no more than described predetermined threshold.In the present embodiment, described first adjusting device 251 comprises the second adjusting device (not shown), and it is used for same ratio according to the indicated raising of described instruction or reduce that volume adjusts that the amplitude of coefficient adjusts that the volume of described K road voice signal is adjusted coefficient so that the volume that described L road voice signal is carried out final adjusted audio signal is no more than described predetermined threshold; Change in the example at one, described first adjusting device 251 comprises the 4th adjusting device (not shown), the volume that is used for adjusting with the resize ratio that is higher than all the other K-1 road voice signals one road voice signal of described K road voice signal is adjusted coefficient, and the volume of adjusting described K-1 road voice signal is adjusted coefficient so that the volume that described L road voice signal is carried out final adjusted audio signal is no more than described predetermined threshold.Correspondingly, in another embodiment, described first coefficient regulator 25 comprises the 3rd adjusting device 252, one or more the volume that its volume that is used for adjusting described K road voice signal is adjusted coefficient and adjusted described L-K road voice signal is adjusted coefficient, so that being carried out final adjusted audio signal volume, described L road voice signal is no more than described predetermined threshold, be appreciated that device shown in Figure 6 also can be used as an embodiment of the 3rd adjusting device 252.
With reference to figure 7, it has described in the device sound mixing of mobile device of a third embodiment in accordance with the invention in the audio mixing process structure chart that multi-channel sound signal is carried out the control device that volume adjusts.In the present embodiment, described control device 2 " comprise also that on basis embodiment illustrated in fig. 4 the tertiary system counts adjusting device 27, and described deriving means 22 " comprises second calculation element 223.Wherein, after being used at the fixed time at interval, described second calculation element 223 adjusts coefficient and this road voice signal calculate the audio signal of described L road voice signal in the max volume of next predetermined time interval volume according to the volume on each road of voice signal, described L road at least, correspondingly, described first coefficient regulator 25 also is used for reducing the volume of described J road voice signal and adjusts coefficient when the volume of described audio signal surpasses predetermined threshold, so that the volume that described L road voice signal is carried out final adjusted audio signal is no more than described predetermined threshold.The described tertiary system is counted adjusting device 27 and is used for improving the volume adjustment coefficient of described J road voice signal so that the volume of the audio signal of described L road voice signal equals described predetermined threshold when the volume of described audio signal is no more than predetermined threshold.Those skilled in the art can with reference to above-mentioned embodiment illustrated in fig. 3 and to the elaboration of associated change example realize above-mentioned Fig. 7 with and change routine shown device, will not give unnecessary details.
With reference to figure 8, it has described the schematic diagram that multi-channel sound signal is carried out the user interface of volume adjustment according to the first embodiment of the present invention in mobile device.In the present embodiment, user interface 3 comprises sound waveform display interface 31 and volume control operation interface 32 two parts.Wherein, sound waveform display interface 31 has shown the waveform of three road voice signals, and for example first via voice signal 311; Correspondingly, volume control operation interface 32 provides respectively the control interface at every road voice signal, this interface comprises volume control show bar 321 and volume coefficient controll block 322, the controll block 322 of one road voice signal changes this position of controll block 322 in show bar 321 by dragging wherein, can change volume and adjust coefficient.It will be appreciated by those skilled in the art that in the embodiment shown in fig. 7 when this controll block placed the leftmost side, it was 0 that the volume of corresponding one road voice signal is adjusted coefficient, at this moment, represents that this road voice signal is not played; On the contrary, when this controll block placed the rightmost side, it was 100 that the volume of corresponding one road voice signal is adjusted coefficient, at this moment, represents that this road voice signal is play with max volume.
With reference to figure 8, it will be appreciated by those skilled in the art that above-mentioned user interface 3 also can be achieved by other modes again.For example in a variation example, can adjust the volume adjustment coefficient of multi-channel sound signal respectively by (for example making between 100) numerical value of input in text box and the mode of submitting between 0.In such variation example, the user may occur and send the situation that the volume of adjusting two-way or the above voice signal of two-way is adjusted the instruction of coefficient simultaneously, can adjust one road signal this moment earlier, and then adjust another road signal (for example handling according to the constant mode of the above-mentioned volume of keeping last controlled voice signal); Also can handle the volume of this two-way or the controlled voice signal of multichannel according to the execution mode of above-mentioned first to the 3rd embodiment simultaneously, those skilled in the art are appreciated that this and implement, and do not repeat them here.
With reference to figure 9, it has described the building-block of logic of assemblies such as simulation device sound mixing in control device according to an embodiment of the invention and the mobile device, power adjustment apparatus.Present embodiment be control device provided by the present invention place behind the mobile device with this mobile device in the logical connection structure schematic diagram of assembly such as simulation device sound mixing, power adjustment apparatus.Wherein, one tunnel voice signal that is encoded is converted to analog signal by D/A conversion device 41 after decoding by decoding device 8 again.In this transfer process, former one road code signal is converted into the two-way voice signal, correspond respectively to the L channel of word/Simulation Conversion Assembly 41, the voice signal of R channel, this two paths of signals carries out inputing to simulation device sound mixing 71 after the power adjustment through power adjustment apparatus 61,62 respectively again then.Similarly, another road voice signal also inputs to simulation device sound mixing 71 carry out the power adjustment through power adjustment apparatus 63 again after sound collection equipment 5 is gathered after.In the present embodiment, for being adjusted coefficient, the volume of each road voice signal adjusts, control device 2 is connected to above-mentioned power adjustment apparatus 61,62,63 (among the figure thinner lines shown in) respectively, so that can content control respectively three power adjustment apparatus according to the present invention.For example, with reference to figure 7, when the volume adjustment coefficient of user by volume coefficient controll block 322 raising first via voice signals, this user instruction controlled device 2 receives, and this control device 2 is controlled according to shown in Figure 2 then.Suppose that described first via voice signal is corresponding to the signal through 5 collections of sound collection equipment among Fig. 8, then control device 2 will be controlled the volume adjustment coefficient that above-mentioned power adjustment apparatus 61 reduces L channel, the volume that does not change simultaneously R channel is adjusted coefficient, and according to the volume adjustment coefficient of user instruction increase through the signal of sound collection equipment 5 collections, thereby make that the volume of the voice signal of L channel correspondence reduces in the signal after the simulation device sound mixing carries out audio mixing, and the volume of the signal of gathering through sound collection equipment 5 raises.It will be appreciated by those skilled in the art that, when this control device be applied in the mobile phone and described simulation device sound mixing for carrying out Kara OK function, then the signal of above-mentioned L channel can be original singer's sound and the signal gathered through sound collection equipment 5 can be singer's a song.
With reference to Figure 10, its described according to another embodiment of the invention control device and the building-block of logic of assembly such as simulation device sound mixing in the mobile device, power adjustment apparatus.Present embodiment is a variation example embodiment illustrated in fig. 9, and wherein the device sound mixing in the mobile device is digital device sound mixing 72.In the present embodiment, the two-way voice signal carries out inputing to digital device sound mixing 72 after the power adjustment through power adjustment apparatus 64,65 respectively via decoding device 8 decodings again.Similarly, another road voice signal also inputs to simulation device sound mixing 72 through analog/digital conversion device 42 carry out the power adjustment through power adjustment apparatus 66 again after sound collection equipment 5 is gathered after again.Similarly, the above-mentioned power adjustment apparatus 64,65,66 of control device 2 ' be connected to respectively (among the figure thinner lines shown in) is so that can content control respectively three power adjustment apparatus according to the present invention.Those skilled in the art can not repeat them here with reference to the control procedure of the volume adjustment of the description of above-mentioned Fig. 8 being understood present embodiment.
With reference to Figure 10, wherein, the signal behind above-mentioned digital device sound mixing 72 audio mixings also carries out volume control through another power adjustment apparatus 67 again, is appreciated that the user can send the instruction of adjusting this device 67 according to similar mode shown in Figure 7.In the present embodiment, this power adjustment apparatus 67 of described control device 2 ' be not connected to, those skilled in the art understand, can adopt any other device to control to installing 67, because its control procedure is fairly simple, be no more than the digital-to-analog converter device that it connects as long as satisfy.Certainly, those skilled in the art also understand, changing in the example also at one can be by this power adjustment apparatus 67 of above-mentioned control device 2 ' control, and can adjust coefficient according to the volume of all the other road voice signals this moment at least be that zero situation is controlled this device 67, does not repeat them here.
With reference to Figure 11, its described according to still another embodiment of the invention control device and the building-block of logic of assembly such as simulation device sound mixing in the mobile device, power adjustment apparatus.Present embodiment is that Fig. 9, one embodiment illustrated in fig. 10 change example, wherein comprises 74,75 and two simulations of two digital device sound mixings device sound mixing 76,77 in the mobile device.In the present embodiment, the two-way voice signal is via decoding device 8 decodings, pass through power adjustment apparatus 68 more respectively, 69 carry out the power adjustment, the adjusted signal in each road all is divided into two paths of signals, one tunnel input digit device sound mixing 74 wherein, another road is input digit device sound mixing 75 correspondingly, and then import one tunnel audio signal respectively to digital simulation converter device 44 behind the audio mixing respectively through digital device sound mixing, be converted to analog signal more accordingly corresponding to L channel, this signal is adjusted through power adjustment apparatus 611 and is inputed to simulation device sound mixing 76 after volume is adjusted coefficient, and corresponding to the analog signal of R channel, this signal is adjusted through power adjustment apparatus 612 and is inputed to simulation device sound mixing 77 after volumes are adjusted coefficients.Similarly, also be divided into the two-way voice signal after another road voice signal carries out the power adjustment through power adjustment apparatus 610 again after sound collection equipment 5 is gathered and input to simulation device sound mixing 76 and simulation device sound mixing 77 respectively; Equally similarly, input one tunnel audio signal after 76 pairs of two-way input audio signals of simulation device sound mixing carry out audio mixing, another road audio signal of input after 77 pairs of two-way input audio signals of simulation device sound mixing carry out audio mixing.It will be appreciated by those skilled in the art that above-mentioned through the two-way audio signal export respectively of simulation device sound mixing 76,77 can be respectively through two sound channels (for example L channel, R channel) broadcast of a playback equipment.Because through twice audio mixing, and twice by the signal difference of audio mixing, so the effect of the relative Fig. 9 of audio mixing effect, Figure 10 of present embodiment is more better.
Similarly, those skilled in the art understand, in said process, carry out through digital device sound mixing 74,75 that the control procedure to input audio signal can be achieved with reference to the process of Figure 10 in the process of audio mixing, correspondingly, carry out through digital device sound mixing 76,77 that the control procedure to input audio signal can be achieved with reference to the process of figure 9 in the process of audio mixing.What both were different is, different with the simulation control criterion that audio mixing adopted at digital audio mixing.In the present embodiment, at the process of digital device sound mixing 74,75 audio mixings, should judge respectively and whether set up as lower inequality:
k 8×2 d1+k 9×2 d2≤2 m
Wherein, k 8Expression power adjustment apparatus 68 determined volumes are adjusted coefficient, and promptly the volume of first via voice signal is adjusted coefficient, k 9Expression power adjustment apparatus 69 determined volumes are adjusted coefficient; d 1The figure place of the decoding device of expression output first via voice signal, d 2The figure place of the decoding device of expression output the second road voice signal, in the present embodiment, because two paths of signals is via same decoding device 8 outputs, so d 1With d 2Equate; M represents to export the figure place of D/A conversion device of the audio signal of this two-way voice signal, promptly installs 44 figure place.
And, should judge respectively and whether set up as lower inequality at the process of digital device sound mixing 76,77 audio mixings:
k 11×s 1+k 10×s 3≤R max76
k 12×s 1+k 10×s 3≤R max77
Wherein, s 1The volume of representing the voice signal of described L channel equipment 441 outputs, s 2The volume of representing the voice signal of described R channel equipment 442 outputs, s 3The volume of the voice signal that expression collects through sound collection equipment 5, k 11Represent described power adjustment apparatus 611 determined volumes adjustment coefficients, k 12Represent the volume adjustment coefficient that described power adjustment apparatus 612 is determined, k 10Represent described power adjustment apparatus 610 determined volumes adjustment coefficients; R Max76The maximum output swing of expression simulation device sound mixing 76, R Max77The maximum output swing of expression simulation device sound mixing 77.
It will be appreciated by those skilled in the art that the control device that is connected respectively with described power adjustment apparatus 68,69,610,611,612 should be according to above-mentioned described each power adjustment apparatus of adjusting respectively to determine its volume of determining respectively adjustment coefficient.Wherein, it will be understood by those skilled in the art that described control device all exists with each power adjustment apparatus to be connected, but among Figure 11 and not shown all connections.In the embodiment shown in fig. 11, owing to there is a two-stage volume adjustment process,, for example need to guarantee k at least so, need a plurality of power adjustment apparatus to match if wish to keep the volume of the described voice signal of adjusting through power adjustment apparatus 69 constant 9* k 11=c, wherein c is a suitable constant, for example 1, to guarantee that finally the volume of the voice signal through adjusting through power adjustment apparatus 69 described in the audio signal of simulation device sound mixing 77 outputs is constant.
Again with reference to Figure 11, it will be appreciated by those skilled in the art that in conjunction with the foregoing description and can control respectively there being the volume adjustment at different levels in more multi-layered time the audio mixing process, to realize purpose of the present invention, do not repeat them here.
Again with reference to above-mentioned Fig. 1 to Figure 11, those skilled in the art understand, change in the example at one, may exist the user to send the situation of adjusting instruction at short notice continually, in such variation example, there is no need if each instruction of user all adjusted obviously according to the foregoing description, therefore, a time parameter is set, no longer receive user instruction after surpassing this time parameter, described all adjustment instructions that then will receive continuously unify to handle and adjust according to the elaboration of the foregoing description once the volume adjustment coefficient of each road voice signal.
More than specific embodiments of the invention are described.It will be appreciated that the present invention is not limited to above-mentioned specific implementations, those skilled in the art can make various distortion or modification within the scope of the appended claims.

Claims (30)

1. one kind is carried out the method that volume is adjusted to L road voice signal in the control audio mixing process in the device sound mixing of mobile device, wherein, the volume of the audio signal that obtains is no more than predetermined threshold so that finally adjust afterwards to described L road voice signal to adjust the volume adjustment coefficient of the J road voice signal in the voice signal of described L road, wherein, 1≤J≤L, L＞1.
2. method according to claim 1, wherein, the volume of the J road voice signal in the voice signal of the described L of described adjustment road is adjusted coefficient and is comprised the steps: so that the volume that described L road voice signal is finally adjusted the back audio signal that obtains is no more than the step of predetermined threshold
A. obtain the volume of the audio signal of described L road voice signal according to predetermined condition;
Whether the volume of b. judging described audio signal surpasses predetermined threshold;
C. if the volume of described audio signal surpasses predetermined threshold, then adjust the volume adjustment coefficient of the J road voice signal in the voice signal of L road, so that the volume of final adjusted audio signal is no more than predetermined threshold according to pre-defined rule.
3. method according to claim 2, wherein, described predetermined condition comprises the adjustment instruction that receives from the user, its indication is adjusted the volume of K road voice signal and is adjusted coefficient, 1≤K≤L, wherein, described step a comprises the steps:
-adjust the volume of the audio signal of the described L of coefficient calculations road voice signal at least according to the volume on each road in the voice signal of described L road, wherein, to adjust coefficient be that the volume of the indicated K road voice signal of described adjustment instruction is adjusted coefficient to the volume of described controlled K road voice signal.
4. method according to claim 3 wherein, also comprised the steps: before described step a
-judge whether comprise in the described adjustment instruction that the volume that increases arbitrary road voice signal adjusts the indication of coefficient;
The described adjustment instruction of-Ruo comprises the indication of the volume adjustment coefficient that increases arbitrary road voice signal, then execution in step a.
5. according to each described method in the claim 2 to 4, wherein, also comprise the steps: after the described step c
D. if the volume of described audio signal is no more than predetermined threshold, then the volume of directly adjusting described K road voice signal according to described adjustment instruction is adjusted coefficient.
6. according to each described method in the claim 3 to 5, wherein, the step that the volume of adjusting J road voice signal in the voice signal of described L road according to pre-defined rule among the described step c is adjusted coefficient comprises the steps:
-the volume of adjusting described K road voice signal is adjusted coefficient so that the volume that described L road voice signal is carried out final adjusted audio signal is no more than described predetermined threshold.
7. method according to claim 6, wherein, the step that the volume of the described K of described adjustment road voice signal is adjusted coefficient comprises the steps:
-with same ratio according to the indicated increase of described adjustment instruction or reduce volume and adjust the amplitude of coefficient and adjust the volume of described K road voice signal and adjust coefficient.
8. according to claim 6 or 7 described methods, wherein, the step that the volume of adjusting J road voice signal in the voice signal of described L road according to pre-defined rule among the described step c is adjusted coefficient comprises the steps:
-one or more the volume adjusted in the voice signal of described L-K road is adjusted coefficient, so that the volume that described L road voice signal is carried out final adjusted audio signal is no more than described predetermined threshold.
9. method according to claim 8, wherein, the step that the volume of adjusting J road voice signal in the voice signal of described L road according to pre-defined rule among the described step c is adjusted coefficient also comprises the steps:
-judge if the volume of described L-K road voice signal is adjusted coefficient all to be adjusted into zero whether the volume of the audio signal of described L road voice signal surpasses predetermined threshold under this supposed situation;
The volume of the described audio signal of-Ruo surpasses predetermined threshold, then carry out compromise and adjust operation, not exclusively to adjust and to make the volume that described L road voice signal is carried out final adjusted audio signal be no more than described predetermined threshold according to the indication of described adjustment instruction.
10. method according to claim 9, wherein, described compromise adjustment operation comprises the steps:
The volume of one or more in the voice signal of the described L-K of-reduction road is adjusted coefficient, correspondingly improve one or more the volume that volume in the voice signal of described K road adjusts in the voice signal that coefficient is increased respectively and adjust coefficient, make the volume that described L road voice signal is carried out final adjusted audio signal be no more than predetermined threshold.
11. method according to claim 2, wherein, described predetermined condition comprises predetermined time interval, and wherein, described step a comprises the steps:
-adjust coefficient and this road voice signal according to the volume on each road in the voice signal of described L road at least after at interval at the fixed time to calculate the volume of the audio signal of described L road voice signal in the max volume of next predetermined time interval,
Wherein, described step c comprises the steps:
The volume of the described audio signal of-Ruo surpasses predetermined threshold, then reduces the volume of described J road voice signal and adjusts coefficient, so that the volume that described L road voice signal is carried out final adjusted audio signal is no more than described predetermined threshold.
12. method according to claim 11 wherein, also comprises the steps: after the described step c
D '. if the volume of described audio signal is no more than predetermined threshold, then improves the volume of described J road voice signal and adjust coefficient, so that the volume that described L road voice signal is carried out final adjusted audio signal equals described predetermined threshold.
13. according to claim 11 or 12 described methods, wherein, described predetermined time interval is followed successively by the reproduction time length of an object of being handled by described device sound mixing.
14. according to each described method in the claim 2 to 13, wherein, described device sound mixing is the simulation device sound mixing, and described step b comprises the steps:
-judge whether set up as lower inequality:
Σ n = 1 L ( k n × s n ) ≤ R max
Wherein, k nThe volume adjustment coefficient of representing n road voice signal, s nThe max volume value of representing n road voice signal, R MaxThe maximum output swing of representing described simulation device sound mixing, n is an integer, and 1≤n≤L.
15. according to each described method in the claim 2 to 13, wherein, described device sound mixing is digital device sound mixing, and described step b comprises the steps:
-judge whether set up as lower inequality:
Σ n = 1 L ( k n × 2 d n ) ≤ 2 m
Wherein, k nThe volume adjustment coefficient of representing n road voice signal, d nThe figure place of the decoding device of expression output n road voice signal, m represents to export the figure place of D/A conversion device of the audio signal of described L road voice signal, and n is an integer, and 1≤n≤L.
16. in the control audio mixing process L road voice signal is carried out the control device that volume is adjusted in the device sound mixing of a mobile device, wherein, the volume of the audio signal that obtains is no more than predetermined threshold so that finally adjust afterwards to described L road voice signal to adjust the volume adjustment coefficient of the J road voice signal in the voice signal of described L road, wherein, 1≤J≤L, L＞1.
17. control device according to claim 16 wherein, comprising:
Deriving means is used for obtaining according to predetermined condition the volume of the audio signal of described L road voice signal;
The volume judgment means is used to judge whether the volume of described audio signal surpasses predetermined threshold; And
First coefficient regulator, be used for when the volume of described audio signal surpasses predetermined threshold, adjust the volume of the J road voice signal in the voice signal of L road according to pre-defined rule and adjust coefficient, so that the volume of final adjusted audio signal is no more than predetermined threshold.
18. control device according to claim 17, wherein, described predetermined condition comprises the adjustment instruction that receives from the user, and its indication is adjusted the volume of K road voice signal and adjusted coefficient, 1≤K≤L, and wherein, described deriving means also comprises:
First calculation element, be used for adjusting according to the volume on each road of voice signal, described L road at least the volume of the audio signal of the described L of coefficient calculations road voice signal, wherein, to adjust coefficient be that the volume of the indicated K road voice signal of described adjustment instruction is adjusted coefficient to the volume of described controlled K road voice signal.
19. control device according to claim 18, wherein, described deriving means also comprises:
First judgment means is used for judging whether described adjustment instruction comprises the indication of the volume adjustment coefficient that increases arbitrary road voice signal;
Wherein, when comprising the indication of the volume adjustment coefficient that increases arbitrary road voice signal, described adjustment instruction moves described first calculation element.
20., wherein, also comprise according to each described control device in the claim 17 to 19:
Second coefficient regulator, the volume that is used for directly adjusting described K road voice signal according to described adjustment instruction when the volume of described audio signal is no more than predetermined threshold is adjusted coefficient.
21. according to each described control device in the claim 18 to 20, wherein, described first coefficient regulator comprises:
First adjusting device, the volume that is used to adjust described K road voice signal are adjusted coefficient so that the volume that described L road voice signal is carried out final adjusted audio signal is no more than described predetermined threshold.
22. control device according to claim 21, wherein, described first adjusting device comprises:
Second adjusting device is used for same ratio according to the indicated raising of described instruction or reduce that volume adjusts that the amplitude of coefficient adjusts that the volume of described K road voice signal is adjusted coefficient so that the described volume that L road voice signal is carried out final adjusted audio signal is no more than described predetermined threshold.
23. according to each described control device in claim 21 or 22, wherein, described first coefficient regulator comprises:
The 3rd adjusting device, one or more the volume that is used for adjusting described L-K road voice signal is adjusted coefficient, so that the volume that described L road voice signal is carried out final adjusted audio signal is no more than described predetermined threshold.
24. control device according to claim 23, wherein, described first coefficient regulator comprises:
Second judgment means is used to judge if the volume of described L-K road voice signal is adjusted coefficient all be adjusted into zero whether the volume of the audio signal of described L road voice signal surpasses predetermined threshold under this supposed situation;
The compromise adjusting device, being used for when the volume of described audio signal surpasses predetermined threshold, compromising and adjusting operation, not exclusively to adjust and to make the volume that described L road voice signal is carried out final adjusted audio signal be no more than described predetermined threshold according to the indication of described adjustment instruction.
25. control device according to claim 24, wherein, described compromise adjusting device comprises:
-Di five adjusting devices, one or more the volume that is used for reducing described L-K road voice signal is adjusted coefficient, correspondingly improve one or more the volume that volume in the voice signal of described K road adjusts in the voice signal that coefficient is increased respectively and adjust coefficient, make the volume that described L road voice signal is carried out final adjusted audio signal be no more than predetermined threshold.
26. control device according to claim 17, wherein, described predetermined condition comprises predetermined time interval, and wherein, described deriving means comprises:
Second calculation element, at least adjust coefficient and this road voice signal calculate the audio signal of described L road voice signal in the max volume of next predetermined time interval volume according to the volume on each road of voice signal, described L road after being used at the fixed time at interval
Wherein, described first coefficient regulator also is used for reducing the volume of described J road voice signal and adjusts coefficient when the volume of described audio signal surpasses predetermined threshold, so that the volume that described L road voice signal is carried out final adjusted audio signal is no more than described predetermined threshold.
27. control device according to claim 26 wherein, also comprises:
The tertiary system is counted adjusting device, and the volume that is used for improving described J road voice signal when the volume of described audio signal is no more than predetermined threshold is adjusted coefficient so that the volume that described L road voice signal is carried out final adjusted audio signal equals described predetermined threshold.
28. according to claim 26 or 27 described control device, wherein, described predetermined time interval is followed successively by the reproduction time length of an object of being handled by described device sound mixing.
29. according to each described control device in the claim 17 to 28, wherein, described device sound mixing is the simulation device sound mixing, and described volume judgment means is used for judging whether set up as lower inequality:
Σ n = 1 L ( k n × s n ) ≤ R max
Wherein, k nThe volume adjustment coefficient of representing n road voice signal, s nThe max volume value of representing n road voice signal, R MaxThe maximum output swing of representing described simulation device sound mixing, n is an integer, and 1≤n≤L.
30. according to each described control device in the claim 17 to 28, wherein, described device sound mixing is digital device sound mixing, and described volume judgment means is used for judging whether set up as lower inequality:
Σ n = 1 L ( k n × 2 d n ) ≤ 2 m
Wherein, k nThe volume adjustment coefficient of representing n road voice signal, d nThe figure place of the decoding device of expression output n road voice signal, m represents to export the figure place of D/A conversion device of the audio signal of described L road voice signal, and n is an integer, and 1≤n≤L.
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Application publication date: 20080917